Forcella Fontanafredda

Overview

Forcella Fontanafredda is a long, demanding category 1 climb that stretches 25.9 km from a base at 343 m to a summit at 1679 m. That works out to a net elevation gain of 1336 m, with a total ascent of 1308 m once you account for the small dips along the way. The average gradient of 5.16% sounds forgiving on paper, and for long stretches it is — but that figure hides a viciously steep pitch that touches 29.21%, one of the harshest ramps you will meet on a climb of this length. This is an ascent of patience punctuated by moments of raw survival.

How the Gradient Unfolds

At nearly 26 km, Forcella Fontanafredda rewards riders who read the road well. A 5.16% average across 25.9 km means the climb is fundamentally a tempo effort: sustainable, rhythmic, and won or lost by how evenly you meter your energy. The catch is that a 29.21% maximum is more than five times the average, so the true gradient swings dramatically around that mean. Expect long, rolling middle-grade sections where you can settle into a cadence, then a wall-like pitch that forces you out of any comfortable rhythm. Because the total ascent (1308 m) sits just below the net gain (1336 m), the profile is almost relentlessly upward — there is very little descending to recover on, so the climbing is honest from bottom to top.

Pacing Notes

On a climb this long, discipline beats bravado. Aim to hold a steady effort just under your threshold for the bulk of the 25.9 km, treating your FTP as the ceiling you do not want to breach until the final kilometres. If you are unsure of that number, run the numbers through the FTP estimator before you plan your ride. The single most important tactical decision is the 29.21% ramp: back off your power in the approach so you arrive with a reserve, then grind through the wall at whatever cadence keeps you upright. Blow up on that pitch and the remaining distance to 1679 m becomes a very lonely place. Save something for the top — 1336 m of gain is a big ask on tired legs.

Gearing

Gear for the wall, not the average. A 5.16% mean is manageable on standard gearing, but the 29.21% pitch demands the lowest ratio you can carry. A compact 34-tooth chainring paired with a 34×32 cassette is a sensible minimum for most riders; if you have any doubt about your climbing legs over 25.9 km, size up to 34×34 for extra insurance on the steepest ramp. There is no penalty for spinning — on a climb with 1336 m of net gain, a lower gear that preserves your knees and your energy will always beat a heroic but unsustainable push.

Summary

Forcella Fontanafredda is a true endurance climb with a nasty sting in its profile: long enough to test your patience over 25.9 km, and steep enough at 29.21% to end your day if you misjudge it. Pace it like a tempo effort, gear low, and respect the wall.

Length: 25.9 km
Average gradient: 5.16%
Max gradient: 29.21%
Start: 343 m
Summit: 1679 m
Net gain: 1336 m
Total ascent: 1308 m
Category: 1